Elektro-Automatik GmbH Operating Manual ELR 9000 Electronic DC Load with Energy Recovery Doc ID: ELR9EN Revision: 05 Date: 06/2013
ELR 9000 Series TABLE OF CONTENTS 1 2 GENERAL 1.1 About this document........................................5 Retention and use............................................5 Copyright...........................................................5 Validity...............................................................5 1.2 Explanation of symbols....................................5 1.3 Warranty...........................................................5 1.4 Limit of liability.................................
ELR 9000 Series 4 SERVICING AND MAINTENANCE 5 ACCESSORIES AND OPTIONS 6 SERVICE & SUPPORT 4.1 Maintenance / cleaning..................................72 4.2 Fault finding / diagnosis / repair.....................72 Replacing a defect mains fuse.......................72 4.3 Firmware updates...........................................73 HMI update.....................................................73 Device firmware update.................................73 4.4 Calibration..............................
ELR 9000 Series 1. General 1.1 About this document 1.1.1 Retention and use This document is to be kept in the vicinity of the equipment for future reference and explanation of the operation of the device. This document is to be delivered and kept with the equipment in case of change of location and/or user. 1.1.2 Copyright Reprinting, copying, also partially, usage for other purposes as foreseen of this manual are forbidden and breach may lead to legal process. 1.1.
ELR 9000 Series 1.5 Disposal of equipment 1.6 Product key A piece of equipment which is intended for disposal must, according to European laws and regulations (ElektroG, WEEE) be returned to the manufacturer for scrapping, unless the person operating the piece of equipment or another, delegated person is conducting the disposal.
ELR 9000 Series 1.8 Safety 1.8.1 Safety notices Mortal danger - Hazardous voltage • Electrical equipment operation means that some parts will be under dangerous voltage. Therefore all parts under voltage must be covered! • All work on connections must be carried out under zero voltage (input not connected to voltage sources) and may only be performed by qualified and informed persons. Improper actions can cause fatal injury as well as serious material damage.
ELR 9000 Series 1.8.3 Responsibility of the operator Operator is any natural or legal person who uses the equipment or delegates the usage to a third party, and is responsible during its usage for the safety of the user, other personnel or third parties. The equipment is in industrial operation. Therefore the operators are governed by the legal safety regulations.
ELR 9000 Series 1.8.5 Alarm signals The equipment offers various possibilities for signalling alarm conditions, however, not for danger situations. The signals may be optical (on the display as text) acoustic (piezo buzzer) or electronic (pin/status output of an analog interface). All alarms will cause the device to switch off the DC input.
ELR 9000 Series 1.9.3 Specific technical data Model 3.5kW ELR 9080-170 ELR 9250-70 ELR 9500-30 ELR 9750-22 Input/output voltage 195...253V L-N 195...253V L-N 195...253V L-N 195...253V L-N Input/output connection L,N,PE L,N,PE L,N,PE L,N,PE Input/output frequency 50/60Hz ±10% 50/60Hz ±10% 50/60Hz ±10% 50/60Hz ±10% Input/output fuse (internal) T16A T16A T16A T16A Efficiency (2 92.5% 93.5% 94.5% 94.5% Max. input voltage UMax 80V 250V 500V 750V Max.
ELR 9000 Series 3.5kW Model ELR 9080-170 ELR 9250-70 ELR 9500-30 ELR 9750-22 Set value inputs U, I, P U, I, P U, I, P U, I, P Actual value output Status signals U, I DC on/off, Remote on/off CV, OVP, OT U, I DC on/off, Remote on/off CV, OVP, OT U, I DC on/off, Remote on/off CV, OVP, OT U, I DC on/off, Remote on/off CV, OVP, OT Galvanic isolation to the device max. 1500V DC max. 1500V DC max. 1500V DC max.
ELR 9000 Series Model 7kW ELR 9080-340 ELR 9250-140 ELR 9500-60 ELR 9750-44 ELR 91000-30 Input/output voltage 195...253V L-N 195...253V L-N 195...253V L-N 195...253V L-N 195...253V L-N Input/output connection L1,L3,N,PE L1,L3,N,PE L1,L3,N,PE L1,L3,N,PE L1,L3,N,PE Input/output frequency 50/60Hz ±10% 50/60Hz ±10% 50/60Hz ±10% 50/60Hz ±10% 50/60Hz ±10% Input/output fuse (internal) T16A T16A T16A T16A T16A Efficiency (2 92.5% 93.5% 94.5% 94.5% 94.5% Max.
ELR 9000 Series 7kW Model ELR 9080-340 ELR 9250-140 ELR 9500-60 ELR 9750-44 ELR 91000-30 Set value inputs U, I, P U, I, P U, I, P U, I, P U, I, P Actual value output Status signals U, I DC on/off, Remote on/off CV, OVP, OT U, I DC on/off, Remote on/off CV, OVP, OT U, I DC on/off, Remote on/off CV, OVP, OT U, I DC on/off, Remote on/off CV, OVP, OT U, I DC on/off, Remote on/off CV, OVP, OT Galvanic isolation to the device max. 1500V DC max. 1500V DC max. 1500V DC max. 1500V DC max.
ELR 9000 Series Model 10.5kW ELR 9080-510 ELR 9250-210 ELR 9500-90 ELR 9750-66 ELR 91500-30 Input/output voltage 195...253V L-N 195...253V L-N 195...253V L-N 195...253V L-N 195...253V L-N Input/output connection L1,L2,L3,N,PE L1,L2,L3,N,PE L1,L2,L3,N,PE L1,L2,L3,N,PE L1,L2,L3,N,PE Input/output frequency 50/60Hz ±10% 50/60Hz ±10% 50/60Hz ±10% 50/60Hz ±10% 50/60Hz ±10% Input/output fuse (internal) T16A T16A T16A T16A T16A Efficiency (2 92.5% 93.5% 94.5% 94.5% 94.5% Max.
ELR 9000 Series 10.5kW Model ELR 9080-510 ELR 9250-210 ELR 9500-90 ELR 9750-66 ELR 91500-30 Set value inputs U, I, P U, I, P U, I, P U, I, P U, I, P Actual value output Status signals U, I DC on/off, Remote on/off CV, OVP, OT U, I DC on/off, Remote on/off CV, OVP, OT U, I DC on/off, Remote on/off CV, OVP, OT U, I DC on/off, Remote on/off CV, OVP, OT U, I DC on/off, Remote on/off CV, OVP, OT Galvanic isolation to the device max. 1500V DC max. 1500V DC max. 1500V DC max. 1500V DC max.
ELR 9000 Series Views A - Mains switch B - Control panel C - Control interfaces (digital, analog) D - Share Bus and remote sense connection E - DC input (view shows connection type 1) F - AC input/output connection G - Master-Slave ports 1.9.4 Figure 1 - Front side Page 16 Figure 2 - Back side EA Elektro-Automatik GmbH Helmholtzstr. 31-33 • 41747 Viersen Germany Fon: +49 2162 / 3785-0 Fax: +49 2162 / 16230 www.elektroautomatik.de ea1974@elektroautomatik.
Figure 3 - Left hand side Figure 4 - Right hand side ELR 9000 Series EA Elektro-Automatik GmbH Helmholtzstr. 31-33 • 41747 Viersen Germany Fon: +49 2162 / 3785-0 Fax: +49 2162 / 16230 www.elektroautomatik.de ea1974@elektroautomatik.
ELR 9000 Series Figure 5 - View from above Page 18 EA Elektro-Automatik GmbH Helmholtzstr. 31-33 • 41747 Viersen Germany Fon: +49 2162 / 3785-0 Fax: +49 2162 / 16230 www.elektroautomatik.de ea1974@elektroautomatik.
ELR 9000 Series Figure 6 - Control Panel Overview of the elements of the operating panel For a detailed description see section „1.10.6. The control panel (HMI)“ and „1.10.6.2. Pushbuttons“. Touchscreen display (resistive) (1) Used for selection of set values, menus, conditions and display of actual values and status. The touchscreen can be operated with the fingers or with a stylus.
ELR 9000 Series 1.10 Construction and function 1.10.1 General description The electronic high performance loads of the ELR 9000 series are especially suitable for test systems and industrial controls due to their compact construction of a 19” enclosure with 3 height units (3U). Apart from basic functions of electronic loads, set point curves can be produced in the integrated function generator (sine, rectangular, triangular and other curve types).
ELR 9000 Series 1.10.3 Scope of delivery 1 x Electronic load device 1 x Printed operating manual 1 x Share Bus plug 1 x Remote sense plug 1 x 1.8m USB cable 1 x Set of DC terminal cover(s) 1 x CD “Drivers & Tools“ 1.10.4 Accessories For these devices the following accessories are available: Digital interface modules IF-AB Automatic Isolation Unit ENS 1.10.5 Pluggable and retrofittable AnyBus interface modules for RS232, CANopen, Ethernet, Profibus, ProfiNet, ModBus or Devicenet are available.
ELR 9000 Series 1.10.6 The control panel (HMI) The HMI (Human Machine Interface) consists of a display with touchscreen, two rotary knobs, a button and a USB-A port. 1.10.6.1 Touchscreen display The graphic touchscreen display is divided into a number of areas. The complete display is touch sensitive and can be operated by finger or stylus to control the equipment.
ELR 9000 Series • Status display (upper right) This area displays various status texts and symbols: Display Description Locked The HMI is locked Unlocked The HMI is unlocked Input ON DC input is switched on Input OFF DC input is switched off Remote The device is under remote control from.... Analog ....the built in analog interface USB & others ....
ELR 9000 Series 1.10.6.3 Rotary knobs As long as the device is in manual operation the two rotary knobs are used to adjust set values as well as setting the parameters in the pages SETTINGS and MENU. For a detailed description of the individual functions see section “3.3 Manual operation” on page 37. Both rotary knobs have an additional push function whereby the decimal position of the value to be set is moved.
ELR 9000 Series 1.10.7 USB-Port Type B (Back side) The USB-B port on the back side of the device is provided for communication with the device and for firmware updates. The included USB cable can be used to connect the device to a PC (USB 2.0 or 3.0). The driver is delivered on the included CD and installs a virtual COM port. Details for remote control can be found on the web site of the manufacturer or on the included CD.
ELR 9000 Series 1.10.10 Share connector The 2 pole WAGO socket (“Share”) on the back side of the device is provided for connection to equally named sockets on compatible power supplies to build a twoquadrants operation setup. For details about that feature refer to „3.9.3. Two quadrant operation (2QO)“. Following power supply and electronic load series are compatible: • PS 9000 2U/3U (new from 2013) • PSI 9000 2U/3U (new from 2013) • ELR 9000 1.10.
ELR 9000 Series 2. Installation & commissioning 2.1 Transport and storage 2.1.1 Transport • The handles on the front side of the device are not for carrying! • Because of its weight, transport by hand should be avoided where possible. If unavoidable then only the housing should be held and not on the exterior parts (handles, DC input terminal, rotary knobs).
ELR 9000 Series 2.3.2 Preparation Mains connection of an energy back-feeding electronic load of ELR 9000 series is done via the included 5 pole plug on the back of the device. Wiring of the plug is at least 3 strand or, for some models, 5 strand of suitable cross section and length. For recommendations for cable cross section see “„2.3.4. Mains connection (AC)“.
ELR 9000 Series 2.3.4 Mains connection (AC) • Connection to an AC mains supply may only be carried out by qualified personnel. • Cable cross section must be suitable for the maximum input/output current of the device (see table below) • Before plugging in the input plug ensure that the device is switched off by its mains switch • Ensure that all regulations for the operation of and connection to the public grid of energy back-feeding equipment have been applied and all necessary conditions have been met.
ELR 9000 Series 2.3.5 Connection to DC sources In the case of a device with a high nominal current and hence a thick and heavy DC connection cable it is necessary to take account of the weight of the cable and the strain imposed on the DC connection. Especially when mounted in a 19” cabinet or similar, where the cable hangs on the DC input, a strain reliever has to be used. The DC load input is on the back side of the device and is not protected by a fuse.
ELR 9000 Series Examples of the type 1 terminal: • 90° up or down • space saving in depth • no bending radius • horizontal lead • space saving in height • large bending radius 2.3.6 Grounding of the DC input Individually operated devices can always be grounded from the DC minus pole, i.e. can be directly connected to PE. The DC plus pole, however, if it is to be grounded, may only be so for input voltages up to 300V.
ELR 9000 Series 2.3.8 Connecting the “Share” bus The “Share” connector on the back side of the device can be used in addition to a DC parallel connection.It serves to balance voltage of multiple in constant voltage operation or when using the integrated function generator of the master unit. Alternatively, it can be connected to a compatible power sources, i.e. power supplies of series PS 9000 3U or PSI 9000 3U, in order to run a two-quadrants operation.
ELR 9000 Series 2.3.10 Connecting the analog interface The 15 pole connector (Type: Sub-D, D-Sub) on the rear side is an analog interface. To connect this to a controlling hardware (PC, electronic circuit), a standard plug is necessary (not included in the scope of delivery). It is generally advisable to switch the device completely off before connecting or disconnecting this connector, but at least the DC input. The analog interface is galvanically isolated from the device internally.
ELR 9000 Series 2.3.
ELR 9000 Series 3. Operation and application 3.
ELR 9000 Series 3.2.3 Resistance regulation / constant resistance Electronic loads whose operating principle is based on a variable internal resistance have resistance regulation and constant resistance mode (CR) as a matter of course. The load attempts to set the internal resistance to the user defined value and to adjust the input current dependant on the input voltage according to Ohm’s law IIN = UIN / RSET.
ELR 9000 Series 3.2.5 Alarm conditions This section only gives an overview about device alarms. What to do in case your device indicates an alarm condition is described in section „3.5. Alarms and monitoring“. As a basic principle, all alarm conditions are signalled optically (Text + message in the display), acoustically (if activated) and as a readable status via the digital interface. With any alarm occurring, the DC input of the device is switched off.
ELR 9000 Series 3.3 Manual operation 3.3.1 Powering the device The device should, as far as possible, always be switched on using the rotary switch on the front of the device. Alternatively this can take place using an external cutout (main switch, circuit breaker) of suitable current capacity. After switching on, the display will first show the manufacturers logo (approx. 10s) followed by the manufacturers name, address, device type, firmware version(s), serial number and item number (approx. 3s).
MENU EA Elektro-Automatik GmbH Helmholtzstr. 31-33 • 41747 Viersen Germany Page 2 Page 3 Page 4 Page 5 Page 6 Page 7 Default Profile User Profile 1 User Profile 2 User Profile 3 User Profile 4 User Profile 5 User Events Profiles Overview About HW, SW... Fon: +49 2162 / 3785-0 Fax: +49 2162 / 16230 www.elektroautomatik.de ea1974@elektroautomatik.de OPD = {0W...Pnom} Aktion = {NO | SIGNAL | WARNING |ALARM} OCD = {0A...Inom} Aktion = {NO | SIGNAL | WARNING |ALARM} UCD = {0A...
MENU Page 40 EA Elektro-Automatik GmbH Helmholtzstr. 31-33 • 41747 Viersen Germany Fon: +49 2162 / 3785-0 Fax: +49 2162 / 16230 UI-IU Arbitrary Ramp DIN 40839 Trapezoid U t2= 0.1ms...36000s (1ms) Ue(DC)= 0V...Umax Load from USB t1= 0.1ms...36000s (1ms) Uend= 0V...Umax I Angle= 0°...359° Us(DC)= 0V...Umax Ustart= 0V...Umax t4= 0.1ms...36000s (1ms) t3= 0.1ms...36000s (1ms) t2= 0.1ms...36000s (1ms) U IU-Table Settings 2 U(Off) = U(A)…Umax-U(A) I t1= 0.1ms...36000s (1ms) U(A)= 0V...
MENU HMI Setup Communication EA Elektro-Automatik GmbH Helmholtzstr. 31-33 • 41747 Viersen Germany TP Calibration HMI Update Sound on Lock all HMI Lock Alarm Sound Brightness: 1...10 Panel Contrast Sound on Always on Backlight Setup Key Sound English (Interface type) Ethernet Language Configure interface Sound off Sound off ON/OFF possible Off after 60 sec. Other lang. Deutsch ... ELR 9000 Series Fon: +49 2162 / 3785-0 Fax: +49 2162 / 16230 www.elektroautomatik.
ELR 9000 Series 3.3.3.1 Menu “General Settings” Element Allow remote control Input after power ON Analog interface range S. Description 1 Selection “NO” means that the device cannot be remotely controlled over either the digital or analog interfaces. If remote control is not allowed, the status will be shown as “Local” in the status area on the main display. Also see section 1.10.6.1 2 Determines the condition of the DC input after power-up.
ELR 9000 Series 3.3.3.5 Menu “About HW, SW...” This menu page displays an overview of device relevant data such as serial number, article number etc. 3.3.3.6 Menu “Function Generator” See „3.8 The function generator“ on page 56. 3.3.3.7 Menu “Communication” Here settings for digital communication via the optional interface modules (abbr. IF) of the IF-AB series are made. The touch area “Configure interface” opens one or more settings pages, depending on the module in use.
ELR 9000 Series IF Level 1 IP Settings Level 2 DHCP Manual Profinet/IO, 1 & 2 Port DNS 1 DNS 2 Description The IF allows a DHCP server to allocate an IP address, a subnet mask and a gateway. If no DHCP server is in the network then network parameters will be set as defined in point “Manual” IP This option is activated by default. An IP address can be maually allocated. Gateway Here a gateway address can be allocated if required..
ELR 9000 Series 3.3.3.8 Menu “HMI settings” These settings refer exclusively to the control panel (HMI). Element Language Description Selection of the display language. Currently (date: 06-13-2013) available are: German, English Backlight Setup Panel Contrast HMI Lock Key Sound Alarm Sound HMI Update TP Calibration 3.3.4 Additional languages (up to three can be integrated) can be implemented on demand and installed into the HMI via update.
ELR 9000 Series 3.3.5 Changing the operating mode In general, the manual operation of an ELR 9000 distinguishes between three operating modes which are tied to set value input using the rotary knobs or ten-key pad. This assignment must be changed if one of the four set values is to be adjusted which is currently not available. ►►How to change the operating mode: 1. On the main screen tap the touch area Setting voltage and current 2.
ELR 9000 Series ►►How to adjust values with the rotary knobs: 1. First check whether the value to be changed is assigned to one of the rotary knobs. The main screen displays the assignment: 2. If, as shown in the example, the assignment is voltage (U) left and the current (I) right, and it is required to change the resistance or power, then the assignments can be changed by tapping this touch area. A set of selection areas then appears in which the assignments can be changed. 3.
ELR 9000 Series 3.4 Remote control 3.4.1 General Remote control is principally possible via the built-in analog or USB port or via one of the optional interface modules (AnyBus CompactCom). Important here is that only the analog or one digital interface can be in control. It means that if, for example, an attempt were to be made to switch to remote control via the digital interface whilst analog remote control is active (Pin Remote = LOW) the device would report an error via the digital interface.
ELR 9000 Series 3.4.3.2 General One of the plug-in and retrofittable modules listed in 3.4.3.1 can be installed. It can take over remote control of the device alternatively to the built-in USB type B on the back side or analog interface. For installation see section „1.10.8. Interface module slot“ and separate documentation. The modules require little or no settings for operation and can be directly used with their default configuration.
ELR 9000 Series 3.4.4.2 Analog interface specification Pin Name Type* Description 1 VSEL AI Set voltage value 2 CSEL AI Set current value 3 VREF AO Reference voltage 4 DGND POT Ground for all digital signals Levels 0…10V or. 0...5 V correspond to 0..100% of UNom 0…10V or. 0...5 V correspond to 0..100% of INom Voltage range = 0…30V IMax = -1mA bei 5V ULOW to HIGH typ.
ELR 9000 Series 3.4.4.4 Simplified diagram of the pins Digital Input (DI) + 10k + 3.4.4.5 Analog Input (AI) The internal circuit requires that a switch with low resistance should be used (relay, switch, circuit breaker etc.) in order to send a clean signal to the DGND. 12V V~0.5 AGND A digital output from a circuit or PLC may not be sufficient if not an “open collector”. Digital Output (DO) A quasi open collector, realised as high resistance pull-up against the internal supply.
ELR 9000 Series 3.5 Alarms and monitoring 3.5.1 Definition of terms There is a clear distinction between equipment alarms (see “3.2.5 Alarm conditions”) such as overvoltage or overheating, and user defined events such as e.g OVD overvoltage monitoring. Whilst equipment alarms serve to protect the equipment, initially switching off the DC input, user defined events can cut out the DC input (action = ALARM) but can also simply give an acoustic signal to make the user aware.
ELR 9000 Series ►►How to configure the device alarms: 1. Tap the touch area on the main screen. 2. On the right side tap the white arrow to select “2. Protect”. 3. Set the limits for the equipment alarm relevant to your application if the default value of 110% is unsuitable. The set values can be entered using the ten-key tab. This will appear by tapping the touch area that shows the rotary knob assignments.
ELR 9000 Series As soon as an event is set up with an action other than “NONE” and with accepted settings, an incident can occur whether the DC input is switched on or off. On leaving the pages “User events” or “Settings” an event can be directly displayed. User events are an integral part of the actual user profile. Thus, if another user profile, or the default profile, is selected and used, the events will be either differently or not configured. The set values can be entered using the ten-key tab.
ELR 9000 Series 3.7 Loading and saving a user profile The menu “Profiles” serves to select between a default profile and up to 5 user profiles. A profile is a collection of all settings and set values. Upon delivery, or after a reset, all 6 profiles have the same settings and all set values are 0. If the user changes settings or sets target values then these create a working profile which can be saved to one of the 5 user profiles. These profiles or the default one can then be switched.
ELR 9000 Series 3.8 The function generator 3.8.1 Introduction The built-in function generator is, like the equally named electronic devices, able to create various signal forms and apply these to set values for voltage or current. Whilst R/I mode is activated, access to the function generator is not available. The generator functions can be manually operated completely on the device.
ELR 9000 Series 3.8.4 Manual operation 3.8.4.1 Function selection and control Via the touchscreen one of the functions described above can be called up, configured and controlled. Selection and configuration are only possible when the input is switched off. ►►How to select a function: 1. Tap the touch area on the main screen. If the menu does not appear it is because the DC input is still switched on or the touch area is locked due to the device being possibly in remote control. 2.
ELR 9000 Series ►►How to start and stop a function: 1. The function can be started either by tapping or operating the “On/Off” button, if the DC input is currently switched off. The function then starts immediately. During the progress of the functions sine wave, rectangular wave, triangular wave, trapezoidal wave or ramp no actual values are displayed. 2. The function can be stopped either by tapping or operating the “On/Off” button.
ELR 9000 Series 3.8.6 Triangular function The following parameters can be configured for a triangular wave function: Value Range Description I(A), U(A) 0...(Nominal value - (Off)) of U, I A = Amplitude of the signal to be generated I(Off), U(Off) 0...(Nominal value - (A)) of U, I Off = Offset, based on the foot of the triangular wave t1 0.1ms...36000s Time for the positive slope of the triangular wave signal. t2 0.1ms...
ELR 9000 Series 3.8.8 Trapezoidal function The following parameters can be configured for a trapezoidal curve function: Value Range Description I(A), U(A) 0...(Nominal value - (Off)) of U, I A = Amplitude of the signal to be generated I(Off), U(Off) 0...(Nominal value - (A)) of U, I Off = Offset, based on the foot of the trapezium t1 0.1ms...36000s Time for the negative slope of the trapezoidal wave signal t2 0.1ms...36000s Time for the top value of the trapezoidal wave signal t3 0.1ms...
ELR 9000 Series 3.8.10 Arbitrary function The arbitrary (freely definable) function offers the user further scope. Up to 100 sequences are available for use for current I and voltage U, all of which have the same parameters but which can be differently configured so that a complex function process can be built up. The 100 sequences can run one after another in a sequence block, and this sequence block can then be repeated many times or endlessly.
ELR 9000 Series Schematic diagram: Application and result: A Focussing 1 cycle of 1 sequence from 100: End (DC) Start (DC) St ar t( En de A C ) (A C ) Example 2 t The DC values at start and end are the same but the AC (amplitude) not. The end value is higher than the start so that the amplitude increases with each new half sine wave continuously through the sequence. This, of course, only if the sequence time and frequency allow for multiple waves to be created. e.g. for f=1Hz and Seq.
ELR 9000 Series By linking together a number of differently configured sequences, complex progressions can be created. Smart configuration of the arbitrary generator can be used to match triangular, sine, rectangular or trapezoidal wave functions and thus, e.g. a sequence of rectangular waves with differing amplitudes or duty cycles could be produced. Assignment to either U or I makes up to 100 sequences available for either current or voltage but not a mix.
ELR 9000 Series 3.8.10.1 Loading and saving the arbitrary function The 100 sequences of the arbitrary function, which can be manually configured with the control panel of the device and which are applicable either to voltage (U) or current (I), can be saved to or loaded from a common USB flash drive via the front side USB port. Generally, all 100 sequences are saved or loaded using a text file of type CSV (semicolon separator), which represents a table of values.
ELR 9000 Series ►►How to save a sequence table (100 sequences) to a USB flash drive: 1. Do not plug the USB flash drive yet or remove it. 2. Access the function selection menu of the function generator via MENU -> Function Generator -> Arbitrary 3. Tap on , then . The device will request you to plug the USB flash drive now. 4. After plugging it, the device will try to access the flash drive and find the folder HMI_FILES and read the content.
ELR 9000 Series Uploading of a table from a USB flash drive must use text files (.csv). Plausibility is checked on loading (values not too high, number of values correct),and possible errors reported in which case the table will not be loaded. The 4096 values in the table are only checked for size and number. If all the values were to be graphically plotted a curve would be created which could include significant step changes in current or voltage.
ELR 9000 Series 3.9 Other applications 3.9.1 Parallel operation in master-slave (MS) Multiple devices of same kind and model can be connected in parallel in order to create a system with higher total current and, hence, higher power. The units are connected with their DC inputs, their master-slave bus and their Share bus. The master-slave bus is a digital bus which makes the system work as one big unit regarding value adjusted, actuals and status.
ELR 9000 Series 3. The two units at the beginning and end of the chain should be terminated, if long connection cables are used. This is achieved using a 3-pole DIP switch which is positioned on the back side of the unit next to the MS connectors. Position: not terminated (standard) Switches 2 and 3 serve as a BIAS network and should be switched on to avoid undefined bus noise. ► Position: terminated Switch 1 enables the bus termination resistor.
ELR 9000 Series The initialisation process of the master and the master-slave system will, so long as MS mode is still activated, be repeated each time the units are powered. Initialisation can be repeated at any time via MENU / GENERAL SETTINGS / PAGE 9. 3.9.1.4 Operating the master-slave system After successful configuration and initialisation of the master and slave units, these will show in their displays “master” or “slave” in the status area.
ELR 9000 Series 3.9.2 Series connection Series connection is not a permissible operating method for electronic loads and must not be installed or operated under no circumstances! 3.9.3 Two quadrant operation (2QO) 3.9.3.1 Introduction This way of operating refers to the use of a source, in this case a power supply of, for example, series PS 9000 3U, and a sink, in this case a series ELR 9000 electronic load.
E-LOAD n E-LOAD 1 PSU n ShareBus E.U.T PSU 1 Configuration C: Master-Slave Master-Slave ELR 9000 Series Multiple e-loads and Multiple power supplies, plus 1 test object (E.U.T), for raising the total performance. The load combination and the power supply combination create in each case a total system with a defined power. It is necessary also here to match the nominal values of the two systems. i.e an 80V DC input of the loads to a max. 80V DC output of the power supplies. 3.9.3.
ELR 9000 Series 4. Servicing and maintenance 4.1 Maintenance / cleaning The device needs no maintenance. Cleaning may be needed for the internal fans, the frequency of cleanse is depending on the ambient conditions. The fans serve to cool the components which are heated by the inherent minimal power loss. Heavily dirt filled fans can lead to insufficient airflow and therefore the DC input would switch off too early due to overheating or possibly lead to defects.
ELR 9000 Series 4.3 Firmware updates 4.3.1 HMI update The control panel (HMI) can be updated via the front or back USB ports, whereby the back USB port requires a PC with suitable software and the front USB needs only a FAT32 formatted USB stick with the update file. Hence the latter option is much simpler. Firmware updates should only be installed when they can eliminate existing bugs in the firmware in the device or contain new features. ►►How to update the control panel firmware: 1.
ELR 9000 Series 4.4 Calibration 4.4.1 Preamble The devices of series ELR 9000 feature a calibration function that is intended to re-calibrate a few major parameters once the move out of tolerance. This is limited to compensate small differences of up to 1% or 2%, but not more.
ELR 9000 Series ►►How to calibrate the voltage set value (U-Set) 1. Adjust the connected voltage source to 102% max. voltage of the ELR 2. device, for the sample model with 80V this would be 81.6V, rounded to 82V. Make sure the source can not provide more current than the ELR can draw, else the ELR can not pull down the sources’s voltage for calibration. In the display, tap MENU, then „General Settings“, then go to Page 5 and then tap START. 3. In the next screen select: Calibrate U-Set.
ELR 9000 Series 5. Accessories and options 5.1 Overview 6. Service & Support 6.1 General 6.2 Contact options Accessories and options are, when necessary, delivered with their own documentation and are not detailed further in this document. Repairs, if not otherwise arranged between supplier and customer, will be carried out by the manufacturer. For this the equipment must generally be returned to the manufacturer. No RMA number is needed.
EA-Elektro-Automatik GmbH & Co. KG Entwicklung - Produktion - Vertrieb Helmholtzstraße 31-33 41747 Viersen Telefon: 02162 / 37 85-0 Telefax: 02162 / 16 230 ea1974@elektroautomatik.de www.elektroautomatik.
